CN107794777A - A kind of preparation method of ventilative moisture absorption PU leather - Google Patents
A kind of preparation method of ventilative moisture absorption PU leather Download PDFInfo
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- CN107794777A CN107794777A CN201711274198.2A CN201711274198A CN107794777A CN 107794777 A CN107794777 A CN 107794777A CN 201711274198 A CN201711274198 A CN 201711274198A CN 107794777 A CN107794777 A CN 107794777A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/147—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes characterised by the isocyanates used
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
- D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/145—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes two or more layers of polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
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- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/121—Permeability to gases, adsorption
- D06N2209/123—Breathable
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/141—Hydrophilic
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- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1685—Wear resistance
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- Polymers & Plastics (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention relates to artificial synthetic leather field, discloses a kind of preparation method of ventilative moisture absorption PU leather, including：1) preparation of a modified meerschaum；2) preparation of twice-modified sepiolite；3) preparation of polyurethane resin；4) preparation of wet method bass；5) preparation of dry method veneer；6) wet method bass is bonded with dry method veneer, successively after drying, cooling down, divests release liners, finished product.PU leather can effectively strengthen the sucting wet air permeability of PU leather made from the inventive method.The present invention on the premise of the feel of PU leather is kept, can effectively improve the wearability of PU leather simultaneously.
Description
Technical field
The present invention relates to artificial synthetic leather field, more particularly to a kind of preparation method of ventilative moisture absorption PU leather.
Background technology
PU leather is exactly the epidermis of polyurethane composition.It is widely used in makeing the dress of case and bag, clothes, footwear, vehicle and furniture now
Decorations, it has increasingly obtained the affirmative in market, and its application is wide, and quantity is big, as many as kind, be traditional natural leather without
What method met.Artificial leather, synthetic leather are an important components of plastics industry, are made extensively in national economy every profession and trade
With.Artificial leather, synthetic leather production have 60 years development history in the world, and China's development and production since 1958 are artificial
Leather, it is to develop industry earlier in China Plastics Industry.In recent years, Chinese artificial leather, synthetic leather industry development not
Only it is that the growth of production line is equipped by manufacturing enterprise, product yield increases year after year, variety design increases every year, and industry development mistake
There is the industry organization of oneself in journey, there is suitable cohesiveness, so as to Chinese artificial leather, synthetic leather enterprise, including correlation
Industry organization together, develops into an industry for having considerable strength.
Application No. CN201010516209.5 patent discloses a kind of environment-friendly type PU resins, and it is more that raw material includes oligomer
First alcohol, diisocyanate, dimethyl sulfoxide (DMSO) and dimethyl carbonate；A kind of environment-friendly type PU using the environment-friendly type PU resins as raw material
Leather, including surface layer, middle level and bottom, each layer raw material is by PU resins that mass percent is 40-60%, 2-10% tune
The solvent composition of toner, 30-50%；A kind of method for preparing environment-friendly type PU leather, by face stock composition be coated in from
Drying and cooling on type paper, by the feedstock composition in middle level coated in Drying and cooling on surface layer, by the feedstock composition of the bottom
Coated on middle level, it is Nian Jie with base fabric after Drying and cooling release liners are peeled off, carry out secondary drying.The invention solves existing skill
Organic solvent toxicity is big in PU resins in art, residual toxicity organic solvent in PU leather finished products, the technical problem of TVOC too high levels.
Especially suitable for production environment-friendly type PU resins, environment-friendly type PU leather.
But in existing PU leather product, because substrate surface scribbles thicker coating so that the gas permeability of PU leather, moisture absorption
Property substantially reduce, it is therefore necessary to develop it is a with high ventilative and hygroscopicity can PU leather.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of preparation method of ventilative moisture absorption PU leather.Present invention side
PU leather can effectively strengthen the sucting wet air permeability of PU leather made from method.The present invention can be in the premise for the feel for keeping PU leather simultaneously
Under, effectively improve the wearability that PU is removed from office.
The present invention concrete technical scheme be：A kind of preparation method of ventilative moisture absorption PU leather, comprises the following steps：
1) sepiolite powder is added in deionized water and is uniformly dispersed and adjusts pH value to be heated to 70-85 DEG C, then to 9-11
While aluminum sulfate solution is added dropwise, while regulation pH is 5-6, after being added dropwise, stirring curing, washs to neutrality, drying, be made one
Secondary modified meerschaum.
2) be ground after a modified meerschaum is mixed with water, polyethylene glycol, wash, dry after obtain it is twice-modified
Sepiolite.
3) PPG, twice-modified sepiolite, dibutyl tin laurate and dimethylformamide are mixed and stirred
Mix uniformly, then add isocyanates, heating response, polyurethane resin is made.
4) take the part polyurethane resin, add mill base, with wet method slurry, wet method slurry is applied on base material, so
Base material is immersed in dimethyl formamide solution afterwards and solidified, finally takes out and washes, dries successively, wet method bass is made.
5) take the part polyurethane resin, after addition dimethylformamide, butanone and toner, with dry method slurry, will
Dry method slurry is applied in release liners, dries successively, after cooling, dry method veneer is made.
6) the wet method bass is bonded with the dry method veneer, successively after drying, cooling down, divests release liners, made
Obtain finished product.
The present invention is using sepiolite as the functional additive for improving PU leather moisture permeability.Sepiolite inside configuration has
There is the nanoscale hole of prosperity, specific surface area is big, has very strong hygroscopicity, and can improve the gas permeability of PU leather.But
It is poor with the compatibility of polyurethane because sepiolite is inorganic material, it is not easy to disperse in polyurethane, easily reunites.
Therefore, the first presoma by the use of sour aluminium as unformed aluminum oxide of the invention, forms colloid, in sepiolite table after reaction
Bread is covered with unformed aluminum oxide, and unformed oxidation aluminium surface contains great amount of hydroxy group, and reactivity is higher, while also improves sea
The compatibility and dispersiveness of afrodite and polyurethane.Then, the further polyethylene glycol to sepiolite Surface coating of the present invention, poly- second
Glycol can participate in reaction in the synthetic reaction of polyurethane resin so that the associativity of sepiolite and polyurethane is more preferable, simultaneously
Because the compatibility of polyethylene glycol and urethane monomer is good, additionally it is possible to reduce the steric hindrance of sepiolite in the polymerization, enter
One step improves sepiolite dispersiveness, makes it be not easy to reunite.
Further, in step 1), the quality amount ratio of sepiolite and aluminum sulfate is 100:4-6.
Further, in step 2), the quality amount ratio of a modified meerschaum and polyethylene glycol is 100:5-15.
Further, in step 3), PPG, twice-modified sepiolite, dibutyl tin laurate and isocyanic acid
The quality amount ratio of ester is 90-110:1-5:1-5:15-25.
Further, in step 3), reaction temperature is 50-70 DEG C, reaction time 4-6h.
Further, the dibutyl tin laurate is carried on graphene in advance before addition is reacted, its carrying method
For：Dibutyl tin laurate is added in acetone, heating stirring, addition graphene and ultrasonic disperse, stands cooling, decompression
Filter, gained solid is dried, the graphene for being loaded with dibutyl tin laurate is made.
The present invention is loaded using the adsorptivity of graphene to dibutyl tin laurate, and its advantage is：It is many
Well known, graphene can effectively improve the wearability of PU leather, but PU leather is sat as artificial fur clothing, artificial leather glove, imitation leather
The raw material of pad is, it is necessary to often and contact human skin.Graphene is while PU leather mechanical performances are strengthened, due to its particle more
It is coarse, can cause PU leather surface become to have it is crude, with during skin contact can jagged sense, influence usage experience.
Therefore, among dibutyl tin laurate is carried on the lamella of graphene by the present invention, dibutyl tin laurate
As the catalyst of polyurethane synthetic reaction, in reaction, PPG and isocyanates the place where catalyst-
Reacted between graphene film Rotating fields.In reaction, the spacing " being strutted " between graphene sheet layer, due to graphene
Pliability get a promotion, can be deformed upon between graphene sheet layer on microcosmic, macroscopically, the harsh feeling of graphene particles
It is greatly reduced, so as to improve the feel of PU leather.
Further, the quality amount ratio of the dibutyl tin laurate and graphene is 1:6-8.
Further, in step 4), setting temperature is 30-40 DEG C, time 10-20min.
Further, in step 4), the coating weight of wet method slurry is 150-180g/m2.
Further, in step 5), the mass percent of the dry method slurry is：Polyurethane resin 55-65%, dimethyl
Formamide 20-30%, butanone 5-15%, the 4-6% of toner.
It is compared with the prior art, the beneficial effects of the invention are as follows：
1st, the present invention can effectively strengthen the sucting wet air permeability of PU leather.
2nd, the present invention on the premise of the feel of PU leather is kept, can effectively improve the wearability of PU leather.
Embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of preparation method of ventilative moisture absorption PU leather, comprises the following steps：
1) sepiolite powder is added in deionized water and is uniformly dispersed and adjusts pH value to be heated to 78 DEG C, then on one side to 10
Aluminum sulfate solution is added dropwise, while being 5.5 with acid solution regulation pH, after being added dropwise, stirring curing, washs to neutrality, dries, be made
Modified meerschaum.Wherein, the quality amount ratio of sepiolite and aluminum sulfate is 100:5.
2) be ground after a modified meerschaum is mixed with water, polyethylene glycol, wash, dry after obtain it is twice-modified
Sepiolite.Wherein, the quality amount ratio of a modified meerschaum and polyethylene glycol is 100:10.
3) by PPG, twice-modified sepiolite, dibutyl tin laurate and dimethylformamide in mass ratio
100:3:3:20 are mixed and stirred for uniformly, then adding toluene di-isocyanate(TDI), heat most 60 DEG C, react 5h, poly- ammonia is made
Ester resin.
4) take the part polyurethane resin, add mill base, with wet method slurry, wet method slurry is applied on base material and (applied
Cloth amount is 165g/m2), then base material is immersed in dimethyl formamide solution and solidifies (35 DEG C of setting temperature, time 15min),
Finally take out and wash, dry successively, wet method bass is made.
5) take the part polyurethane resin, with dry method slurry (polyurethane resin 60%, dimethylformamide 25%,
Butanone 10%, toner 5%), dry method slurry is applied in release liners, after drying, cooling down successively, dry method veneer is made.
6) the wet method bass is bonded with the dry method veneer, successively after drying, cooling down, divests release liners, made
Obtain finished product.
Embodiment 2
A kind of preparation method of ventilative moisture absorption PU leather, comprises the following steps：
1) sepiolite powder is added in deionized water and is uniformly dispersed and adjusts pH value 70 DEG C to be heated to, then while drop to 9
Add aluminum sulfate solution, while being 5 with acid solution regulation pH, after being added dropwise, stirring curing, wash to neutrality, drying, be made once
Modified meerschaum.Wherein, the quality amount ratio of sepiolite and aluminum sulfate is 100:4.
2) be ground after a modified meerschaum is mixed with water, polyethylene glycol, wash, dry after obtain it is twice-modified
Sepiolite.Wherein, the quality amount ratio of a modified meerschaum and polyethylene glycol is 100:5.
3) by PPG, twice-modified sepiolite, dibutyl tin laurate and dimethylformamide in mass ratio
90:1:1:15 are mixed and stirred for uniformly, then adding toluene di-isocyanate(TDI), heat most 50 DEG C, react 6h, polyurethane is made
Resin.
4) take the part polyurethane resin, add mill base, with wet method slurry, wet method slurry is applied on base material and (applied
Cloth amount is 150g/m2), then base material is immersed in dimethyl formamide solution and solidifies (30 DEG C of setting temperature, time 20min),
Finally take out and wash, dry successively, wet method bass is made.
5) take the part polyurethane resin, with dry method slurry (polyurethane resin 55%, dimethylformamide 30%,
Butanone 11%, toner 4%), dry method slurry is applied in release liners, after drying, cooling down successively, dry method veneer is made.
6) the wet method bass is bonded with the dry method veneer, successively after drying, cooling down, divests release liners, made
Obtain finished product.
Embodiment 3
A kind of preparation method of ventilative moisture absorption PU leather, comprises the following steps：
1) sepiolite powder is added in deionized water and is uniformly dispersed and adjusts pH value to be heated to 85 DEG C, then on one side to 11
Aluminum sulfate solution is added dropwise, while being 6 with acid solution regulation pH, after being added dropwise, stirring curing, washs to neutrality, drying, is made one
Secondary modified meerschaum.Wherein, the quality amount ratio of sepiolite and aluminum sulfate is 100:6.
2) be ground after a modified meerschaum is mixed with water, polyethylene glycol, wash, dry after obtain it is twice-modified
Sepiolite.Wherein, the quality amount ratio of a modified meerschaum and polyethylene glycol is 100:15.
3) by PPG, twice-modified sepiolite, dibutyl tin laurate and dimethylformamide in mass ratio
110:5:5:25 are mixed and stirred for uniformly, then adding toluene di-isocyanate(TDI), heat most 70 DEG C, react 4h, poly- ammonia is made
Ester resin.
4) take the part polyurethane resin, add mill base, with wet method slurry, wet method slurry is applied on base material and (applied
Cloth amount is 180g/m2), then base material is immersed in dimethyl formamide solution and solidifies (40 DEG C of setting temperature, time 10min),
Finally take out and wash, dry successively, wet method bass is made.
5) take the part polyurethane resin, with dry method slurry (polyurethane resin 65%, dimethylformamide 20%,
Butanone 9%, toner 6%), dry method slurry is applied in release liners, after drying, cooling down successively, dry method veneer is made.
6) the wet method bass is bonded with the dry method veneer, successively after drying, cooling down, divests release liners, made
Obtain finished product.
Embodiment 4
A kind of preparation method of ventilative moisture absorption PU leather, comprises the following steps：
1) sepiolite powder is added in deionized water and is uniformly dispersed and adjusts pH value to be heated to 78 DEG C, then on one side to 10
Aluminum sulfate solution is added dropwise, while being 5.5 with acid solution regulation pH, after being added dropwise, stirring curing, washs to neutrality, dries, be made
Modified meerschaum.Wherein, the quality amount ratio of sepiolite and aluminum sulfate is 100:5.
2) be ground after a modified meerschaum is mixed with water, polyethylene glycol, wash, dry after obtain it is twice-modified
Sepiolite.Wherein, the quality amount ratio of a modified meerschaum and polyethylene glycol is 100:10.
3) dibutyl tin laurate is carried on graphene in advance before addition is reacted：Dibutyl tin laurate is added
Into acetone, heating stirring, simultaneously ultrasonic disperse, standing are cooled down addition graphene, and decompression is filtered, and gained solid is dried, obtained
It is loaded with the graphene of dibutyl tin laurate.Wherein, the quality amount ratio of the dibutyl tin laurate and graphene
For 1:7.
By PPG, twice-modified sepiolite, dibutyl tin laurate and dimethylformamide in mass ratio
100:3:3:20 are mixed and stirred for uniformly, then adding toluene di-isocyanate(TDI), heat most 60 DEG C, react 5h, poly- ammonia is made
Ester resin.
4) take the part polyurethane resin, add mill base, with wet method slurry, wet method slurry is applied on base material and (applied
Cloth amount is 165g/m2), then base material is immersed in dimethyl formamide solution and solidifies (35 DEG C of setting temperature, time 15min),
Finally take out and wash, dry successively, wet method bass is made.
5) take the part polyurethane resin, with dry method slurry (polyurethane resin 60%, dimethylformamide 25%,
Butanone 10%, toner 5%), dry method slurry is applied in release liners, after drying, cooling down successively, dry method veneer is made.
6) the wet method bass is bonded with the dry method veneer, successively after drying, cooling down, divests release liners, made
Obtain finished product.
Embodiment 5
A kind of preparation method of ventilative moisture absorption PU leather, comprises the following steps：
1) sepiolite powder is added in deionized water and is uniformly dispersed and adjusts pH value to be heated to 78 DEG C, then on one side to 10
Aluminum sulfate solution is added dropwise, while being 5.5 with acid solution regulation pH, after being added dropwise, stirring curing, washs to neutrality, dries, be made
Modified meerschaum.Wherein, the quality amount ratio of sepiolite and aluminum sulfate is 100:5.
2) be ground after a modified meerschaum is mixed with water, polyethylene glycol, wash, dry after obtain it is twice-modified
Sepiolite.Wherein, the quality amount ratio of a modified meerschaum and polyethylene glycol is 100:10.
3) dibutyl tin laurate is carried on graphene in advance before addition is reacted：Dibutyl tin laurate is added
Into acetone, heating stirring, simultaneously ultrasonic disperse, standing are cooled down addition graphene, and decompression is filtered, and gained solid is dried, obtained
It is loaded with the graphene of dibutyl tin laurate.Wherein, the quality amount ratio of the dibutyl tin laurate and graphene
For 1:6.
By PPG, twice-modified sepiolite, dibutyl tin laurate and dimethylformamide in mass ratio
100:3:3:20 are mixed and stirred for uniformly, then adding toluene di-isocyanate(TDI), heat most 60 DEG C, react 5h, poly- ammonia is made
Ester resin.
4) take the part polyurethane resin, add mill base, with wet method slurry, wet method slurry is applied on base material and (applied
Cloth amount is 165g/m2), then base material is immersed in dimethyl formamide solution and solidifies (35 DEG C of setting temperature, time 15min),
Finally take out and wash, dry successively, wet method bass is made.
5) take the part polyurethane resin, with dry method slurry (polyurethane resin 60%, dimethylformamide 25%,
Butanone 10%, toner 5%), dry method slurry is applied in release liners, after drying, cooling down successively, dry method veneer is made.
6) the wet method bass is bonded with the dry method veneer, successively after drying, cooling down, divests release liners, made
Obtain finished product.
Comparative example 1
Difference with embodiment 4 is：Graphene is directly added, and dibutyl tin laurate is not carried on graphene.
Performance comparison is carried out with other Synthetic Leathers to the obtained Synthetic Leather of the present invention, it is as a result as follows：
| Group | Wearability | Surface feel |
| Embodiment 1 | H18 bistrique/2 kilogram, grind 690 turns and break | Feel is smooth |
| Embodiment 4 | H18 bistrique/2 kilogram, grind 730 turns and break | Feel is smooth |
| Comparative example 1 | H18 bistrique/2 kilogram, grind 730 turns and break | Feel is coarse, jagged sense |
Raw materials used in the present invention, equipment, it is the conventional raw material, equipment of this area unless otherwise noted；In the present invention
Method therefor, it is the conventional method of this area unless otherwise noted.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent transformation that technical spirit is made to above example, still fall within the technology of the present invention side
Raw materials used, equipment in the protection domain present invention of case, it is the conventional raw material, equipment of this area unless otherwise noted；This hair
Bright middle method therefor, it is the conventional method of this area unless otherwise noted.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent transformation that technical spirit is made to above example, still fall within the technology of the present invention side
The protection domain of case.
Claims (10)
1. a kind of preparation method of ventilative moisture absorption PU leather, it is characterised in that comprise the following steps：
1) sepiolite powder is added in deionized water and is uniformly dispersed and adjusts pH value to be heated to 70-85 DEG C, then on one side to 9-11
Aluminum sulfate solution is added dropwise, while regulation pH is 5-6, after being added dropwise, stirring curing, washs to neutrality, drying, is made and once changes
Property sepiolite；
2) be ground after a modified meerschaum is mixed with water, polyethylene glycol, wash, dry after obtain twice-modified Hai Pao
Stone；
3) PPG, twice-modified sepiolite, dibutyl tin laurate and dimethylformamide are mixed and stirred for
It is even, isocyanates is then added, heating response, polyurethane resin is made；
4) take the part polyurethane resin, add mill base, with wet method slurry, wet method slurry is applied on base material, then will
Base material immerses in dimethyl formamide solution and solidified, and finally takes out and washes, dries successively, wet method bass is made；
5) take the part polyurethane resin, after addition dimethylformamide, butanone and toner, with dry method slurry, by dry method
Slurry is applied in release liners, dries successively, after cooling, dry method veneer is made；
6) the wet method bass is bonded with the dry method veneer, successively after drying, cooling down, divests release liners, be made into
Product.
A kind of 2. preparation method of ventilative moisture absorption PU leather as claimed in claim 1, it is characterised in that in step 1), sepiolite
Quality amount ratio with aluminum sulfate is 100:4-6.
3. the preparation method of a kind of ventilative moisture absorption PU leather as claimed in claim 1, it is characterised in that in step 2), once change
Property sepiolite and polyethylene glycol quality amount ratio be 100:5-15.
4. the preparation method of a kind of ventilative moisture absorption PU leather as claimed in claim 1, it is characterised in that in step 3), polyethers is more
First alcohol, twice-modified sepiolite, the quality amount ratio of dibutyl tin laurate and isocyanates are 90-110:1-5:1-5:
15-25。
A kind of 5. preparation method of ventilative moisture absorption PU leather as described in claim 1 or 4, it is characterised in that in step 3), reaction
Temperature is 50-70 DEG C, reaction time 4-6h.
A kind of 6. preparation method of ventilative moisture absorption PU leather as claimed in claim 1, it is characterised in that the fourth of tin dilaurate two
Ji Xi is carried on graphene in advance before addition is reacted, and its carrying method is：Dibutyl tin laurate is added in acetone,
Heating stirring, addition graphene and ultrasonic disperse, cooling is stood, decompression filters, gained solid is dried, and is made and is loaded with February
The graphene of dilaurylate.
A kind of 7. preparation method of ventilative moisture absorption PU leather as claimed in claim 6, it is characterised in that the fourth of tin dilaurate two
The quality amount ratio of Ji Xi and graphene is 1:6-8.
A kind of 8. preparation method of ventilative moisture absorption PU leather as claimed in claim 1, it is characterised in that in step 4), solidification temperature
Spend for 30-40 DEG C, time 10-20min.
A kind of 9. preparation method of ventilative moisture absorption PU leather as described in claim 1 or 8, it is characterised in that in step 4), wet method
The coating weight of slurry is 150-180g/m2.
10. the preparation method of a kind of ventilative moisture absorption PU leather as claimed in claim 1, it is characterised in that described dry in step 5)
The mass percent of method slurry is：Polyurethane resin 55-65%, dimethylformamide 20-30%, butanone 5-15%, toner
4-6%.
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| CN109385914A (en) * | 2018-10-26 | 2019-02-26 | 广州恒正科技发展有限公司 | A kind of preparation method of the ventilative water imbibition PU resin of sole |
| CN109537298A (en) * | 2018-11-19 | 2019-03-29 | 福建宝利特科技股份有限公司 | A kind of ventilative shoe lining leather and preparation method thereof that absorbs water |
| CN110080004A (en) * | 2019-05-15 | 2019-08-02 | 安徽省思维新型建材有限公司 | A kind of polyurethane damping synthetic leather, preparation method and application |
| CN110205837A (en) * | 2019-05-15 | 2019-09-06 | 安徽省思维新型建材有限公司 | A kind of preparation method of the polyurethane sunshade synthetic leather based on carbon black |
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| CN109385914A (en) * | 2018-10-26 | 2019-02-26 | 广州恒正科技发展有限公司 | A kind of preparation method of the ventilative water imbibition PU resin of sole |
| CN109537298A (en) * | 2018-11-19 | 2019-03-29 | 福建宝利特科技股份有限公司 | A kind of ventilative shoe lining leather and preparation method thereof that absorbs water |
| CN110080004A (en) * | 2019-05-15 | 2019-08-02 | 安徽省思维新型建材有限公司 | A kind of polyurethane damping synthetic leather, preparation method and application |
| CN110205837A (en) * | 2019-05-15 | 2019-09-06 | 安徽省思维新型建材有限公司 | A kind of preparation method of the polyurethane sunshade synthetic leather based on carbon black |
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|---|---|
| CN107794777B (en) | 2020-10-13 |
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